<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<!--
 ~ Copyright (c) 2005-2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 ~
 ~ WSO2 Inc. licenses this file to you under the Apache License,
 ~ Version 2.0 (the "License"); you may not use this file except
 ~ in compliance with the License.
 ~ You may obtain a copy of the License at
 ~
 ~    http://www.apache.org/licenses/LICENSE-2.0
 ~
 ~ Unless required by applicable law or agreed to in writing,
 ~ software distributed under the License is distributed on an
 ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 ~ KIND, either express or implied.  See the License for the
 ~ specific language governing permissions and limitations
 ~ under the License.
-->
<html>
<head><title>Event Tracer - User Guide</title>

    <link href="../../admin/css/documentation.css" rel="stylesheet" type="text/css" media="all"/>
</head>
<body>
<h1>Event Tracer</h1>

<h2>Configuring Event Tracer</h2>

<p>CEP Event Tracer is an important tool to monitor events. This tool provides huge functionality to trace the event in each and every component. Event tracer will help to check the event when travels along the components. But user needs to enable the tracing in each configuration manually because by default tracing is disabled.�</p>
<h4>Enabling/Disabling Event Tracer for a Input Event Adaptor Configuration</h4>
<p><br/><img src="images/eventTracing.png" alt="Query Expressions"/><br/></p>
<p>As shown above, you can simply enable or disable event tracing for Input Event Adaptor configuration. You can follow the sample approach for <strong>Output Event Adaptor, Event Builder, Event Processor and Event Formatter</strong> as well, But consider any change in tracing status will lead to redeployment of necessary configuration.</p>
<h3>Tracing the events</h3>
<p>Follow the instructions below to access the Event Tracer.</p>
<p>1. Click on "Monitor" on the left side to access the "Monitor" menu.</p>
<p>2. In the "Monitor" menu, click on "Event Tracer."</p>
<p>3. The "Event Tracer" page appears.</p>
<p><br/><img src="images/eventTracerBlank.png" alt="Query Expressions"/><br/></p>
<p>4. After tracing enabled for necessary configuration, you can see how the incoming events traverse through the components of the CEP and how the events got changed. If you click the <strong>Clear All</strong> button all the event related data will be deleted permanently.</p>
<p><br/><img src="images/eventTracerUIFull.png" alt="Query Expressions"/><br/></p>
<p>Here you can use the search option to refine the data in the UI as shown below.</p>
<p><br/><img src="images/searchEventsInTracer.png" alt="Query Expressions"/><br/></p>

</body>
</html>

